Nanocrystalline rare earth permanent magnet material, preparation method and bonded magnet

The invention relates to the technical field of rare earth permanent magnet materials, and particularly discloses a nanocrystalline rare earth permanent magnet material, a preparation method and a bonded magnet. According to the nanocrystalline rare earth permanent magnet material based on the multi-principal-element alloy effect and the preparation method, the nanocrystalline rare earth permanent magnet material still has high magnetic performance under the high substitution amount of high-abundance elements La, Ce and Y, the synergistic effect of five rare earth elements La, Ce, Pr, Nd and Y inhibits formation of a second phase, and the magnetic performance of the nanocrystalline rare earth permanent magnet material is improved. The rare earth permanent magnet material can keep high hard magnetic phase relative content, the grain growth behavior in the rapid quenching and crystallization process is inhibited, the grain size of the nanocrystalline rare earth permanent magnet material is uniform and fine, the